diff --git a/keras_contrib/losses.py b/keras_contrib/losses.py
index bda60ee..beedcfd 100644
--- a/keras_contrib/losses.py
+++ b/keras_contrib/losses.py
@@ -3,7 +3,6 @@ from keras.objectives import *
 import keras_contrib.backend as KC
 
 
-
 class DSSIMObjective():
     def __init__(self, k1=0.01, k2=0.03, kernel_size=3, max_value=1.0):
         """